Alert archive / Pennsylvania / Dauphin County
Weather alerts in Dauphin County, Pennsylvania, 2016
112 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Dauphin County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 112
- Warnings
- 19
- Watches
- 13
- Advisories
- 33
- Busiest month
- August19 alerts
- Busiest day
- July 25, 201610 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Dauphin County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 11 | 9 | 18% | 3 | 100% | 18 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS State College, PA: tornado warnings | 4 | 3 | 25% | 7 | 71% | 14 min |
| NWS State College, PA: severe thunderstorm warnings | 104 | 73 | 30% | 197 | 79% | 29 min |
| NWS State College, PA: flash flood warnings | 9 | 6 | 33% | 9 | 100% | 46 min |
An office's figures cover every county it serves, including across state lines.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
The alerts
Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 12, 3:54 PM EST | Special Weather Statement | CTP | 66 min |
| Jan 12, 4:52 PM EST | Special Weather Statement | CTP | 53 min |
| Jan 20, 3:42 PM EST | Winter Storm Watch | CTP | 37 hr |
| Jan 21, 2:47 PM EST | Winter Storm Warning | CTP | 53 hr |
| Jan 23, 12:08 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 23, 4:20 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 23, 8:51 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 23, 9:14 AM EST | Special Weather Statement | CTP | 61 min |
| Jan 23, 11:40 AM EST | Special Weather Statement | CTP | 50 min |
| Jan 23, 12:36 PM EST | Special Weather Statement | CTP | 84 min |
| Jan 23, 2:30 PM EST | Special Weather Statement | CTP | 75 min |
| Jan 25, 9:30 PM EST | Freezing Rain Advisory | CTP | 12 hr |
| Feb 1, 2:10 PM EST | Flood Watch | CTP | 62 hr |
| Feb 3, 7:43 PM EST | Dense Fog Advisory | CTP | 11 hr |
| Feb 4, 1:19 AM EST | Areal Flood Advisory | CTP | 7 hr |
| Feb 8, 4:34 AM EST | Winter Weather Advisory | CTP | 4 days |
| Feb 12, 4:35 AM EST | Wind Chill Advisory | CTP | 54 hr |
| Feb 12, 1:22 PM EST | Wind Advisory | CTP | 28 hr |
| Feb 14, 2:32 PM EST | Winter Weather Advisory | CTP | 43 hr |
| Feb 15, 5:10 AM EST | Winter Storm Warning | CTP | 35 hr |
| Feb 15, 8:29 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 24, 2:38 PM EST | Flash Flood Watch | CTP | 6 hr |
| Feb 24, 4:54 PM EST | Areal Flood Advisory | CTP | 3 hr |
| Feb 24, 6:10 PM EST | Severe Thunderstorm Warning | CTP | 80 min |
| Feb 24, 11:44 PM EST | Areal Flood Advisory | CTP | 3 hr |
| Feb 25, 5:48 AM EST | River Flood Warning | CTP | 23 hr |
| Mar 16, 4:08 AM EDT | Dense Fog Advisory | CTP | 6 hr |
| Mar 28, 3:42 AM EDT | Wind Advisory | CTP | 18 hr |
| Apr 1, 1:46 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Apr 1, 4:20 PM EDT | Wind Advisory | CTP | 40 hr |
| Apr 2, 10:33 AM EDT | High Wind Warning | CTP | 22 hr |
| Apr 8, 3:46 AM EDT | Winter Weather Advisory | CTP | 36 hr |
| Apr 9, 9:45 AM EDT | Special Weather Statement | CTP | 60 min |
| Apr 12, 2:22 PM EDT | Frost Advisory | CTP | 18 hr |
| Apr 13, 2:05 PM EDT | Frost Advisory | CTP | 18 hr |
| Apr 14, 2:07 PM EDT | Frost Advisory | CTP | 18 hr |
| Apr 18, 1:04 PM EDT | Fire Weather Watch | CTP | 15 hr |
| Apr 19, 4:22 AM EDT | Red Flag Warning | CTP | 16 hr |
| Apr 26, 1:19 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Apr 26, 1:54 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 26, 6:46 PM EDT | Mesoscale Discussion | SPC | 59 min |
| May 14, 12:54 PM EDT | Special Weather Statement | CTP | 96 min |
| May 23, 2:25 AM EDT | Dense Fog Advisory | CTP | 6 hr |
| May 30, 6:36 PM EDT | Special Weather Statement | CTP | 24 min |
| May 30, 6:43 PM EDT | Special Weather Statement | CTP | 32 min |
| May 30, 6:55 PM EDT | Special Weather Statement | CTP | 65 min |
| Jun 5, 1:14 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 5, 3:10 PM EDT | Special Weather Statement | CTP | 50 min |
| Jun 5, 3:11 PM EDT | Special Weather Statement | CTP | 49 min |
| Jun 5, 3:12 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 11, 2:32 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jun 24, 6:57 PM EDT | Special Weather Statement | CTP | 48 min |
| Jun 24, 7:19 PM EDT | Areal Flood Advisory | CTP | 56 min |
| Jun 28, 2:58 PM EDT | Severe Thunderstorm Warning | CTP | 47 min |
| Jun 28, 3:44 PM EDT | Severe Thunderstorm Warning | CTP | 61 min |
| Jun 28, 4:31 PM EDT | Areal Flood Advisory | CTP | 119 min |
| Jun 28, 5:51 PM EDT | Special Weather Statement | CTP | 54 min |
| Jul 1, 1:01 PM EDT | Special Weather Statement | CTP | 29 min |
| Jul 1, 1:33 PM EDT | Severe Thunderstorm Warning | CTP | 72 min |
| Jul 1, 1:56 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 18, 11:40 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 18, 1:42 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 24, 2:26 PM EDT | Heat Advisory | CTP | 28 hr |
| Jul 24, 7:45 PM EDT | Special Weather Statement | CTP | 60 min |
| Jul 25, 9:37 AM EDT | Excessive Heat Warning | CTP | 9 hr |
| Jul 25, 12:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jul 25, 12:43 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 25, 1:45 PM EDT | Special Weather Statement | CTP | 45 min |
| Jul 25, 2:48 PM EDT | Special Weather Statement | CTP | 42 min |
| Jul 25, 3:03 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 25, 4:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 25, 5:15 PM EDT | Severe Thunderstorm Warning | CTP | 60 min |
| Jul 25, 5:42 PM EDT | Special Weather Statement | CTP | 63 min |
| Jul 25, 6:09 PM EDT | Severe Thunderstorm Warning | CTP | 69 min |
| Jul 28, 1:27 PM EDT | Flood Watch | CTP | 8 hr |
| Aug 1, 2:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Aug 1, 3:17 PM EDT | Special Weather Statement | CTP | 28 min |
| Aug 1, 3:21 PM EDT | Special Weather Statement | CTP | 24 min |
| Aug 1, 3:36 PM EDT | Special Weather Statement | CTP | 24 min |
| Aug 1, 10:31 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 6, 12:54 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 11, 12:38 PM EDT | Heat Advisory | CTP | 3 days |
| Aug 11, 3:45 PM EDT | Excessive Heat Watch | CTP | 37 hr |
| Aug 12, 2:45 PM EDT | Excessive Heat Warning | CTP | 51 hr |
| Aug 13, 2:18 PM EDT | Severe Thunderstorm Warning | CTP | 42 min |
| Aug 14, 1:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 14, 6:36 PM EDT | Special Weather Statement | CTP | 24 min |
| Aug 16, 3:24 AM EDT | Heat Advisory | CTP | 13 hr |
| Aug 16, 1:40 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 16, 2:56 PM EDT | Special Weather Statement | CTP | 64 min |
| Aug 16, 3:20 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 16, 3:30 PM EDT | Severe Thunderstorm Warning | CTP | 45 min |
| Aug 16, 3:56 PM EDT | Severe Thunderstorm Warning | CTP | 64 min |
| Aug 16, 8:57 PM EDT | Special Weather Statement | CTP | 63 min |
| Sep 7, 10:55 PM EDT | Special Weather Statement | CTP | 65 min |
| Sep 8, 12:11 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Sep 19, 4:18 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Oct 10, 4:27 AM EDT | Frost Advisory | CTP | 29 hr |
| Oct 14, 2:35 PM EDT | Frost Advisory | CTP | 18 hr |
| Oct 24, 2:43 PM EDT | Freeze Watch | CTP | 13 hr |
| Oct 25, 3:37 AM EDT | Freeze Warning | CTP | 29 hr |
| Oct 30, 3:29 PM EDT | Severe Thunderstorm Warning | CTP | 76 min |
| Oct 30, 3:55 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 30, 4:32 PM EDT | Severe Thunderstorm Warning | CTP | 58 min |
| Nov 19, 4:54 AM EST | Wind Advisory | CTP | 62 hr |
| Nov 29, 9:06 PM EST | Dense Fog Advisory | CTP | 10 hr |
| Dec 10, 2:20 PM EST | Winter Weather Advisory | CTP | 43 hr |
| Dec 16, 3:39 AM EST | Winter Weather Advisory | CTP | 44 hr |
| Dec 17, 3:08 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 17, 9:31 PM EST | Dense Fog Advisory | CTP | 9 hr |
| Dec 17, 11:34 PM EST | Special Weather Statement | CTP | 56 min |
| Dec 25, 2:06 PM EST | Freezing Rain Advisory | CTP | 21 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20152017
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.